2 self-hosted iCloud sync alternatives

iCloud sync is a popular proprietary tool in the calendar & contacts space. These open-source apps let you replace iCloud sync with software you host and control yourself.

Best self-hosted iCloud sync alternatives

EasyMedium

binarysource

Tasks.org CalDAV Sync

Calendar & Contacts

Open-source calendar and task sync client for Android

Replaces Google Calendar Sync, iCloud sync

★ 2.8k Easy setup GPL-3.0

vdirsyncer

Calendar & Contacts

Synchronize calendars and contacts via CalDAV/CardDAV

Replaces iCloud sync

★ 1.9k Medium setup BSD-3-Clause

Compare iCloud sync alternatives

Tasks.org CalDAV Sync vs vdirsyncer

Switching from iCloud sync

Moving off iCloud sync means trading a managed subscription for a service you run yourself. The payoff is ownership: no per-seat pricing, no vendor lock-in, and full control of your data. Start with the option above that matches your setup-difficulty comfort level — every app links to a detailed specs page and head-to-head comparisons.